/**
 * Copyright (C) 2012  The CFuture Android SDK Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.lurencun.android.toolkit.res;

import java.io.IOException;
import java.io.InputStream;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.util.Log;

/**
 * 
 * @author cfuture.chenyoca [桥下一粒砂] (chenyoca@163.com)
 * @date 2012-2-13
 */
public class AssetsReader{
	
	/**
	 * 以输入流的方式读取assets目录内的文件。
	 * @param fileName 以assets为根目录的文件名（如果下级目录需要带目录路径）
	 * @return 文件流对象。如果出错，返回null。
	 */
	public static InputStream readStream(Context context ,String fileName){
		InputStream is = null;
		try {
			is = context.getAssets().open(fileName);
		} catch (IOException e) {
			Log.e("AssetsReader"," ===> 读取Assets文件发生异常："+e.getMessage());
		}
		return is;
	}
	
	/**
	 * 以返回Bitmap的方式读取assets目录内的文件。
	 * @param fileName 以assets为根目录的文件名（如果下级目录需要带目录路径）
	 * @return Bitmap对象。
	 */
	public static Bitmap readBitmap(Context context,String fileName){
		Bitmap bitmap = null;
		try {
			bitmap = new BitmapDrawable(context.getAssets().open(fileName)).getBitmap();
		} catch (IOException e) {
			Log.e("AssetsReader"," ===> 读取Assets文件发生异常："+e.getMessage());
		}
		return bitmap;
	}
	
}
